Abstract
We present an exact calculation for the photon-average bending angle and intensity produced during occultation of a point source by an isothermal atmosphere with an exponential height dependence of turbulent power. The calculation is performed via an expansion in powers of the gradients of average refractivity and turbulent power. Conditions for the validity of the expansion are discussed. We compare results with other expressions, for the same distribution of refractivity, recently presented by V. R. Eshleman and B. S. Haugstad. Discrepancies are noted. Certain properties of photon averages, which may be of importance for the reduction of occultation data, are discussed.
Original language | English (US) |
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Pages (from-to) | 473-478 |
Number of pages | 6 |
Journal | Icarus |
Volume | 39 |
Issue number | 3 |
DOIs | |
State | Published - Sep 1979 |
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science